* {
padding: 0;
    margin: 0;
    box-sizing: border-box;
}
.top {
    width: 96%;
    margin: auto;
}
.bgc {
    width: 96%;
    background-color: #FFFFFF;
    margin: 20px auto;
    height: 600px;
    padding-top: 30px;

}
.box {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    background-color: #F5F5F5;
}

.site-page-header-ghost-wrapper {
    background-color: #f5f5f5;
    padding: 24px;
}

.on-cell {
    width: 30px;
    height: 30px;
    position: relative;
}
.closs{
    position: absolute;
    top: 50%;
    left: 0%;
    border-top: 1px solid black;
    width: 100%;
}
.column{
    position: absolute;
    top: 0%;
    left: 50%;
    border-left: 1px solid black;
    height: 100%;
}
.row{
    display: flex;
}
.panel{
    width: 450px;
    margin: 0 auto;
}

.mmmm{
    width: 70%;
    height: 70%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%,-50%);
    border-radius: 50%;
    z-index: 2;
    border: 1px solid black;
}

.p1{
    background-color: white;
}
.p2{
    background-color: black;
}